Compilare: user.c: In function ‘main’: user.c:26:22: warning: unused variable ‘j’ [-Wunused-variable] int c, n, carte, i, j, operatie, inv = 0; ^ user.c:26:12: warning: unused variable ‘carte’ [-Wunused-variable] int c, n, carte, i, j, operatie, inv = 0; ^ user.c:36:8: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&c); ^ user.c:37:8: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&n); ^ user.c:43:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&nod->carte); ^ user.c:51:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&nod->carte); ^